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Query Optimization

sudha swami
Ranch Hand

Joined: Apr 24, 2007
Posts: 179
Hi,
Instead of using 2 queries, i would like to use only one to get the output A and B. is there any way to do it.

select description as A
from Area
where status = 0;

select count(id) as B
from Area
where status =1;

regards
sudha
Muhammad Saifuddin
Ranch Hand

Joined: Dec 06, 2005
Posts: 1321



I didn't try it myself but hope this will work.


Saifuddin..
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Shailesh Chandra
Ranch Hand

Joined: Aug 13, 2004
Posts: 1081

Originally posted by Saif uddin:




On the first look this query is not going to work because this will also count the ids having status as 0. however the query below is counting only ids which have status 1

also the query will display the description having status = 1 which is not expected from first query.


Top of all I am not sure what is the requirement to make a single query because first query SELECT DESCRIPTION AS A FROM AREA WHERE STATUS = 0; will result in multiple rows and second query SELECT COUNT(ID) AS B FROM AREA WHERE STATUS =1; will result in one row only.

Thanks,
Shailesh


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Jeanne Boyarsky
author & internet detective
Marshal

Joined: May 26, 2003
Posts: 30929
    
158

Why do you want to put it in one query?


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subject: Query Optimization